Dyfyniad APA

Woodward, R. J., & Gardner, S. W. G. (1972). Drilled Pier Foundations. McGraw-Hill.

Dyfyniad Arddull Chicago

Woodward, Richard J., and S. William Greer Gardner. Drilled Pier Foundations. New York: McGraw-Hill, 1972.

Dyfyniad MLA

Woodward, Richard J., and S. William Greer Gardner. Drilled Pier Foundations. McGraw-Hill, 1972.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.